EP2897815A1 - Fahrzeugluftreifen - Google Patents
FahrzeugluftreifenInfo
- Publication number
- EP2897815A1 EP2897815A1 EP13745118.3A EP13745118A EP2897815A1 EP 2897815 A1 EP2897815 A1 EP 2897815A1 EP 13745118 A EP13745118 A EP 13745118A EP 2897815 A1 EP2897815 A1 EP 2897815A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- depth
- circumferential groove
- extension
- circumferential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000005465 channeling Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
- B60C11/0309—Patterns comprising block rows or discontinuous ribs further characterised by the groove cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
- B60C11/1315—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls having variable inclination angles, e.g. warped groove walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0304—Asymmetric patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0341—Circumferential grooves
- B60C2011/0348—Narrow grooves, i.e. having a width of less than 4 mm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0341—Circumferential grooves
- B60C2011/0353—Circumferential grooves characterised by width
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0341—Circumferential grooves
- B60C2011/0355—Circumferential grooves characterised by depth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
- B60C2011/036—Narrow grooves, i.e. having a width of less than 3 mm
Definitions
- the invention relates to a pneumatic vehicle tire for passenger cars with a profiled tread with a trained for use on the vehicle, pointing away from the vehicle outer shoulder OU and pointing to the vehicle
- Inner shoulder IN with groove strips spaced apart from one another
- tread ribs or tread block rows with a formed in the outer shoulder OU over the circumference of the tire extending circumferential groove which axially separates two rows of profile blocks, and with over the circumference of the tire successively arranged transverse grooves, each with a depth measured in the radial direction R T. Q in the axial direction of the one profile block row on the
- Pneumatic vehicle tires are particularly strongly influenced by the trained on the vehicle outside tire shoulder (outer shoulder) and their training.
- a particularly high circumferential and transverse stiffness of the outer profile is desired, so that the handling occurring
- Transverse forces can be transmitted quickly and reliably without delays due to undesired deformation.
- it is just as important for good wet handling properties, the water reliably just in the important for handling
- the invention is therefore based on the object in such pneumatic vehicle tires to raise the conflict of objectives dry handling - wet handling to a higher level.
- the object is fiction, in accordance with the formation of a pneumatic vehicle tire for passenger cars with a profiled tread with trained for use on the vehicle, pointing away from the vehicle outer shoulder OU and pointing to the vehicle inner shoulder IN, by grooves of spaced profile bands, such as tread ribs or profile block rows , with one in the
- Outer shoulder OU formed circumferentially extending over the circumference of the tire circumferential groove, which axially separates two rows of profile blocks, and with the circumference of the tire successively arranged transverse grooves, each with a measured in the radial direction R depth T Q in the axial direction of the one profile block row on extend the circumferential groove in the other block profile block, wherein the depth T Q is greater than the depth Tu of the circumferential groove in the Er stretching region between the
- Transverse grooves solved according to the features of claim 1, wherein the circumferential groove in each case in the extension portions between the circumferentially U adjacent Transverse grooves along the extension in the one direction of rotation D of the tire, starting from the transverse groove disposed in the direction of rotation D to the transverse groove in the direction of rotation D, starting from a maximum depth tuMax with a reduction of the depth tu up to a step formed by step-like elevation of the groove bottom with at least one step a minimum depth tuMin and with a width b of the groove which decreases continuously in the radially inner extension section of the circumferential groove of the extension height h with h ⁇ tu.
- This design allows a high lateral stiffness of the outer shoulder can be ensured due to the small depth of the circumferential groove, which
- Dry handling properties can be achieved at a high level. Nevertheless, by deliberately changing the groove contour with both gradual increase of the
- Subordinate transverse groove can be derived.
- a vehicle tire according to the features of claim 3, wherein the circumferential groove is limited in the axial direction to the outer shoulder OU from a first flank and the inner shoulder IN towards by a second flank, wherein the circumferential groove formed in the between adjacent transverse grooves Peripheral sections in komplanar trained to the tire axis cross-sectional planes with their first flank an inclination angle ß to the radial with 0 ° ⁇ ß ⁇ 60 ° and with its second flank an inclination angle ⁇ to the radial with 0 ° ⁇ a ⁇ 60 °.
- both the inflow of the water in the circumferential groove and the channeled derivative in the transverse groove can be further improved.
- an additional stabilization of the rubber material can be made possible in the region of the grip edges formed by the circumferential groove on the radially outer surface.
- Peripheral sections in komplanar trained to the tire axis cross-sectional planes with their first flank an inclination angle ß to the radial and with its second flank an inclination angle ⁇ to the radial includes, wherein at least one of the two
- a vehicle tire according to the features of claim 5, wherein the circumferential groove is limited in the axial direction to the outer shoulder OU from a first flank and the inner shoulder IN toward by a second flank, wherein one of the two flanks - in particular both flanks - in the radially outer, the profile block rows radially outwardly delimiting surface are each formed between the adjacent transverse grooves extending straight in the circumferential direction.
- Direction of rotation of the tire starting from the upstream in the direction of rotation transverse groove to the downstream direction of rotation from a maximum depth T ax is formed by a step-like raising of the groove bottom with a maximum of two stages reduction of the depth Tu up to a minimum depth TuMm.
- Particularly advantageous is the formation of a vehicle tire according to the features of claim 8, wherein the depth TuMax with (1/3) ⁇ ⁇ TuMax ⁇ (2/3) ⁇ is formed.
- This design represents a good compromise for the optimized solution of the conflict of "good drainage” and "good dry handling properties.”
- Particularly advantageous is the formation of a vehicle tire according to the features of claim 9, wherein the depth TuMm with 1mm ⁇ T UMÜI ⁇ (1 / 3) ⁇ is formed. The design ensures a sufficiently high transverse stiffness for good dry handling properties and still allows to ensure a sufficient slope of the groove bottom to achieve a good drainage of the water.
- a vehicle tire according to the features of claim 10 wherein the step of the step-like elevation of the groove bottom is formed with a step height t s with 1mm ⁇ t s ⁇ 3mm.
- the step of the step-like elevation of the groove bottom is formed with a step height t s with 1mm ⁇ t s ⁇ 3mm.
- Fig. 1 shows a peripheral portion of a pneumatic vehicle tire for car tires in
- FIG. 3 is a sectional view of the profiled strip of Figure 2 according to section III-III of Figure 2
- Figure 4 shows the profile band of Figure 2 in a sectional view along section IV-IV of Figure 2
- Figure 5 shows the profile band of Fig. 2 in a sectional view according to section VV of Figure 2
- FIG. 6 the profile strip of Fig. 2 in a sectional view along section VI-VI of Figure 2
- Fig. 1 shows an example of a pneumatic vehicle tire for passenger cars (PKW) with an asymmetric tread pattern, which is designed with a in the axial direction A of the tire specifically for use on the vehicle to the vehicle facing away from the tire outer shoulder OU and pointing toward the vehicle tire inner shoulder IN ,
- the pneumatic vehicle tire is composed of several in the axial direction A of the
- Pneumatic vehicle tire formed side by side, radially raised profile bands 1, 5, 7 and 9, which are spaced from each other by circumferential grooves 4, 5 and 7 respectively.
- the profile band 1 is formed in the region of the tire outer shoulder OU.
- the profile band 9 is formed in the region of the tire inner shoulder IN.
- the profile bands 5 and 7 are in the central central extension region between
- the profile strips 5, 7 and 9 are formed either as a profile block rows of known type or - as shown in Fig. 1 - as a circumferential ribs of known type, which is extend over the entire circumference of the pneumatic vehicle tire and are aligned in the circumferential direction U of the pneumatic vehicle tire.
- the circumferential grooves 4, 5 and 8 also extend in the circumferential direction U aligned over the entire circumference of the
- the formed in the tire outer shoulder OU profile strip 1 is formed of two axially adjacent A and spaced by a circumferential groove 12 spaced apart profile block element rows 2 and 3, which extend aligned over the entire circumference of the pneumatic vehicle tire in the circumferential direction U.
- the profile block row 3 is limited in the axial direction A in the direction of the inner shoulder IN towards by the circumferential groove 4 and limited to the vehicle facing away from the outside OU by the circumferential groove 12.
- the profile block element row 2 is bounded in the axial direction A in the direction of the inner shoulder IN by the circumferential groove 12.
- the width T A of the ground contact patch extends in the axial direction A from the axial extension region of the profile block row 2 into the axial extension region of the circumferential rib 9.
- the ground contact width TA is the width of the ground contacting part of the tread which corresponds to the statically determined footprint according to ETRTO standards (load at 70% of capacity at an internal pressure of 2.5 bar, internal pressure 85% of 2.5 bar).
- the profile block rows 2 and 3 and the circumferential ribs 5, 7 and 9 are limited in the radial direction R to the outside in each case by a within the ground contact width T A forming the ground contact surface radially outer surface 17.
- the circumferential groove 4 is formed in the radial direction R inwardly with the maximum profile depth P T , which extends from the radially outer surface 17 in the radial direction R to the profile base of the circumferential groove 4.
- the circumferential groove 12 extends over the entire circumference of the pneumatic vehicle tire and is aligned in the circumferential direction U.
- In the profile band 1 are over the entire extent the profile band lin circumferential direction U distributed in a row a plurality of
- Transverse grooves 10 are formed, which extend in the axial direction A starting from the axial extent range outside the Bodenauf width T A in the block profile 2 in the axial direction A in the direction of the inner shoulder IN over the axial extent of the circumferential groove 12 away into the profile block row 3.
- part of the transverse grooves 10 extend into the circumferential groove 4 and another part of the transverse grooves 10 terminate within the profile block row 3 at a distance from the circumferential groove 4 and the circumferential groove 12.
- the transverse grooves 10 are while in the radial direction R with a starting from the radially outer
- the circumferential groove 12 is formed starting from the radially outer surface 17 of the limiting profile block rows 1 and 2 with a groove depth tu measured in the radial direction R inwardly.
- the groove depth tu each formed smaller than the depth t Q of the two transverse grooves 10.
- each of the transverse grooves 10 each intersects the circumferential groove 12 between two successively arranged Peripheral extension sections 13 with a relation to the depth tu of the circumferential groove greater depth t Q.
- the transverse grooves 10 thus subdivide the circumferential groove 12 into a plurality of circumferential extension sections U arranged one behind the other and each of two transverse grooves 10 in the circumferential direction U bounded circumferential extension sections 13.
- each peripheral extension section 13 extends along its extension in the direction of rotation D of the pneumatic vehicle tire indicated in FIGS. 3, 4, 5 and 6, the circumferential groove 12 in each peripheral extension section 13 extends along its extension in the direction of rotation D of the pneumatic vehicle tire indicated in FIG.
- Extension portion 13 formed step 16 in the groove bottom 14, in which the groove bottom 14 is raised by the height hs stepwise in the radial direction R.
- the groove bottom 14 extends in the direction of rotation D in a constant, measured in the radial direction R minimum distance t Um i n to the radially outer surface 17 and the circumferential groove 12 thus with its minimum depth tumin to the confluence in the extension section thirteenth Subordinate transverse groove 10.
- the this transverse groove 10 in the direction of rotation D downstream extension portion 13 is formed starting from this transverse groove 10 to a stage 13 again first with the maximum depth tumax.
- the groove bottom 14 is raised by the height hs and then extends from the step 13 along the extension in the direction of rotation D again with the depth t Um i n up to this
- flanks 18 and 19 each extend from the groove bottom 14 in the radial direction R outwardly to the radially outer surface 17 of the limited by them profile block row 1 and 2.
- the flanks 18 and 19 each extending rectilinearly formed .
- the flank 18 is formed in its section, which has the tire axis, at an inclination angle ⁇ to the radial direction R inclined and formed along its extension in the radial direction R outwardly to the inner shoulder IN inclined towards.
- the flank 19 is their section, which the Has tire axis, formed at an inclination angle ß to the radial direction R inclined and thereby formed along its extension in the radial direction R outwardly to the outside OU inclined.
- the flank 18 forms along the extension of the circumferential groove 12 in its sectional contour line 20 with the radially outer surface 17 a straight line in the circumferential direction U of
- the flank 19 also forms along the extension of the circumferential groove 12 in its sectional contour line 21 with the radially outer surface 17 a straight contour extending in the circumferential direction formed sectional contour.
- the circumferential groove 12 is formed in the radially outer surface 17 in each of the two extending in the circumferential direction U arranged transverse grooves 10 extending portions 13 along its extension with a constant measured in the axial direction A width.
- the circumferential groove 12 is radially within the radially outer surface 17 over its entire radial extent to the groove bottom 14 away with a along the extension of the circumferential groove 12 in
- the maximum change in the groove width is formed in the radial extension region of the circumferential groove 12 adjoining the groove bottom 14 in the radial direction R immediately outside.
- Fig. 6 it can be seen that the extension portion 13 each in the position of the confluence in the downstream direction D in the transverse direction 10 has its minimum value b m i n of the measured directly above the groove bottom 14 groove width b.
- the circumferential position decreases along the extension of the extension section 13 counter to the direction of rotation D, the width measured directly above the groove bottom 14 to the
- Opening in the direction of rotation D upstream transverse groove 10 has its maximum value b max of the measured directly above the groove bottom 14 groove width.
- the maximum groove width measured directly above the groove bottom 14 is formed with bmax ⁇ 9 mm.
- the minimum groove width measured directly above the groove bottom 14 is formed with bmi n ⁇ 0, lmm.
- angles ⁇ and ⁇ are formed within an extension range with 0 ° ⁇ ⁇ 60 ° and with 0 ° ⁇ a ⁇ 60 °.
- Circumferential groove 4 extended transverse grooves 10 divide the profile band 1 in a Vileiere of circumferentially U successively arranged macroblocks 11.
- the depth tumin is formed with tumin ⁇ ax.
- the depth of tumax is with
- the circumferential groove 12 is formed in the radially outer surface 17 with its maximum width bui, which is formed between 3 mm and 9 mm, for example, 5 mm.
- the circumferential groove 12 is formed immediately after the peripheral portion 13 upstream transverse groove 10 in the region of the groove bottom 14 with the maximum width b max with b max ⁇ bm.
- the groove bottom 14 increases continuously between the circumferential extension 13 in the direction D upstream transverse groove 10 and the step 16 from the maximum depth tumax continuously and following the step 16 to the extension region 13 downstream transverse groove 10 also continuously until reaching the minimum depth t Um j n , which is reached at the confluence with the downstream transverse groove, slightly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210108870 DE102012108870A1 (de) | 2012-09-20 | 2012-09-20 | Fahrzeugluftreifen |
PCT/EP2013/066430 WO2014044458A1 (de) | 2012-09-20 | 2013-08-06 | Fahrzeugluftreifen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2897815A1 true EP2897815A1 (de) | 2015-07-29 |
EP2897815B1 EP2897815B1 (de) | 2018-07-11 |
Family
ID=48916085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13745118.3A Not-in-force EP2897815B1 (de) | 2012-09-20 | 2013-08-06 | Fahrzeugluftreifen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2897815B1 (de) |
DE (1) | DE102012108870A1 (de) |
WO (1) | WO2014044458A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4439658B2 (ja) * | 2000-02-14 | 2010-03-24 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP3967917B2 (ja) * | 2001-12-20 | 2007-08-29 | 株式会社ブリヂストン | 空気入りタイヤ |
JP4420623B2 (ja) * | 2003-05-28 | 2010-02-24 | 株式会社ブリヂストン | 空気入りタイヤ |
JP4549074B2 (ja) * | 2004-02-17 | 2010-09-22 | 東洋ゴム工業株式会社 | 空気入りラジアルタイヤ |
JP4530407B2 (ja) * | 2004-07-20 | 2010-08-25 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
JP4631932B2 (ja) * | 2008-05-23 | 2011-02-16 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP5149957B2 (ja) * | 2010-12-14 | 2013-02-20 | 住友ゴム工業株式会社 | 空気入りタイヤ |
-
2012
- 2012-09-20 DE DE201210108870 patent/DE102012108870A1/de not_active Withdrawn
-
2013
- 2013-08-06 WO PCT/EP2013/066430 patent/WO2014044458A1/de unknown
- 2013-08-06 EP EP13745118.3A patent/EP2897815B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2014044458A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014044458A1 (de) | 2014-03-27 |
DE102012108870A1 (de) | 2014-03-20 |
EP2897815B1 (de) | 2018-07-11 |
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